Replace FTS in the history_service with a brute force text search.

chrome/browser/history/history_types.cc

Index: chrome/browser/history/history_types.cc
diff --git a/chrome/browser/history/history_types.cc b/chrome/browser/history/history_types.cc
index 09fed813fffcb57ded6a624f4aa240cc4394ba3a..136a3af98d75b738ea86423abafcd146f650de18 100644
--- a/chrome/browser/history/history_types.cc
+++ b/chrome/browser/history/history_types.cc
@@ -96,6 +96,11 @@ URLResult::URLResult()
     : blocked_visit_(false) {
 }
 
+URLResult::URLResult(const URLRow& url_row)
+    : URLRow(url_row),
+      blocked_visit_(false) {
+}
+
 URLResult::URLResult(const GURL& url, base::Time visit_time)
     : URLRow(url),
       visit_time_(visit_time),
@@ -119,6 +124,11 @@ void URLResult::SwapResult(URLResult* other) {
   std::swap(blocked_visit_, other->blocked_visit_);
 }
 
+// static
+bool URLResult::CompareVisitTime(const URLResult& lhs, const URLResult& rhs) {
+  return lhs.visit_time() > rhs.visit_time();
+}
+
 // QueryResults ----------------------------------------------------------------
 
 QueryResults::QueryResults() : reached_beginning_(false) {